Easy Keto Reuben Casserole – Cheesy, Savory & Perfectly Low-Carb!

Looking for a rich, cheesy, and bold-flavored comfort dish that brings all the classic flavor of a Reuben sandwich—without bread, gluten, or unnecessary carbs? This Easy Keto Reuben Casserole is exactly what you need. With its layers of seasoned ground beef, tangy sauerkraut, melted Swiss cheese, and creamy Thousand Island dressing swirls, this low-carb casserole delivers all the nostalgia of deli-style sandwiches—in a baked, keto-approved format.

Perfect for family dinners , meal prep , or when you’re craving something hearty but staying in ketosis, this one-dish wonder uses simple ingredients like almond flour, sugar-free condiments, and high-quality meats to bring bold Jewish-inspired flavor into your kitchen. Whether you’re doing strict ketosis , following a low-carb diet , or simply love comforting dishes with depth and richness, this keto Reuben casserole will quickly become a household favorite.

In this article, we’ll walk you through how to make this perfect keto Reuben casserole from scratch , explore ingredient substitutions, offer serving ideas, and answer your most common questions. Let’s dive into the world of bold pastrami-inspired flavor!

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Why You’ll Love This Keto Reuben Casserole

This isn’t just any old baked dish—it’s a savory, cheesy, melt-in-your-mouth delight made with real ingredients that bring bold texture and taste together beautifully—in one pan!

Here’s why it stands out:

• 🥩 Meat-packed base : Made with seasoned ground beef or corned beef for deep umami.
• 🧀 Golden cheese topping : Melted Swiss or cheddar adds stretch and richness.
• 🍞 Low-carb crust option : Uses almond flour or crushed pork rinds for structure.
• 🥣 Easy to make : Just layer, bake, and enjoy—no mixing or kneading required!
• ⏱️ Ready in under an hour
• 🧁 Great for batch cooking or freezer meals
• 🧼 Minimal cleanup : One baking dish = easy prep!

Whether you’re making it for yourself, your family, or guests at a dinner party, this keto Reuben casserole will quickly become a go-to comfort dish for any occasion.

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Ingredients You’ll Need

For the Crust Layer:

• 1 cup almond flour or crushed pork rinds
• 2 tbsp melted butter or ghee
• Salt and pepper to taste

Optional: Add garlic powder or paprika for extra depth

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For the Meat Layer:

• 1 lb ground beef or canned corned beef (drained)
• 1/2 small onion, finely chopped
• 2 cloves garlic, minced
• 1 tsp Worcestershire sauce (keto-friendly)
• 1 tsp mustard or horseradish (optional)
• Salt and pepper to taste

Tip: Use grass-fed beef for best flavor and nutrition.

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For the Sauerkraut Layer:

• 1 cup drained sauerkraut (rinsed if too salty)
• 1 tbsp olive oil or avocado oil
• 1/4 tsp caraway seeds (optional, for authentic flavor)

Pro Tip: Sauté sauerkraut slightly for deeper flavor.

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For the Topping:

• 1/2 cup sour cream or Greek yogurt
• 1/4 cup mayonnaise
• 1 tbsp ketchup or tomato paste
• 1 tbsp pickle relish or finely chopped dill pickles
• 1/2 tsp mustard (for homemade Thousand Island-style dressing)

Optional: Fresh dill or chives for garnish

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Final Assembly:

• 1 cup shredded Swiss cheese or cheddar
• Fresh dill or parsley for garnish

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Step-by-Step Instructions

Step 1: Preheat the Oven

Preheat your oven to 350°F (175°C) . Grease a 9×9-inch baking dish or cast iron skillet.

Pro Tip: Use parchment paper for easier removal after baking.

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Step 2: Make the Crust

Combine:

• Almond flour or pork rinds
• Melted butter
• Salt and pepper

Press firmly into the bottom of the prepared pan.

Bake for 8–10 minutes until lightly golden.

Let cool slightly before layering.

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Step 3: Cook the Beef Mixture

In a skillet over medium heat, cook onions and garlic until softened (2–3 minutes ).

Add ground beef and cook until browned and cooked through (6–8 minutes ).

Drain excess fat if needed.

Stir in Worcestershire sauce, salt, and pepper.

Set aside to cool slightly.

Optional: Replace ground beef with corned beef for shortcut version.

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Step 4: Prepare the Sauerkraut

Sauté sauerkraut in olive oil for 3–4 minutes .

Add caraway seeds (if using) and set aside.

Rinse sauerkraut first if overly salty.

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Step 5: Mix the Thousand Island Dressing

In a bowl, combine:

• Sour cream or Greek yogurt
• Mayonnaise
• Ketchup
• Pickle relish
• Mustard (optional)

Mix well and refrigerate while preparing other layers.

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Step 6: Layer the Casserole

Assemble in the same order:

1. Crust
2. Ground beef layer
3. Sauerkraut
4. Cheese
5. Repeat layers if desired
6. Top with final cheese layer

Finish with a drizzle of Thousand Island dressing on top.

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Step 7: Bake Until Golden and Bubbly

Place the casserole in the preheated oven and bake for 25–30 minutes , or until bubbly and golden around the edges.

Let rest for 5–10 minutes before slicing.

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Step 8: Garnish and Serve!

Sprinkle with fresh herbs like dill or chives.

Serve warm with:

• A side salad
• Roasted broccoli
• Pickles or coleslaw for extra contrast

Enjoy every cheesy, savory bite of your Keto Reuben Casserole !

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Nutritional Information (Per Serving – Makes 6 Servings)

Nutrient	Amount
Calories	~220 kcal
Total Fat	~16 g
Saturated Fat	~6 g
Cholesterol	~60 mg
Sodium	~500 mg
Total Carbs	~4 g
Dietary Fiber	~2 g
Net Carbs	~2 g
Protein	~14 g

Note: Values may vary based on exact measurements and optional add-ins.

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Tips for the Best Keto Reuben Casserole

1. Use quality corned beef or ground beef – Adds depth and natural spice.
2. Don’t skip pressing the crust – Keeps everything intact and sliceable.
3. Layer carefully for even distribution – Ensures each bite has perfect balance.
4. Make ahead and store – Flavors intensify overnight; keep refrigerated.
5. Double the batch for future meals – Great for freezing and reheating later.

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Variations & Customizations

Want to switch things up? Try these tasty variations:

No-Bake Version

Chill the mixture and layer cold for quick appetizer bites.

Chicken Reuben Style

Replace beef with shredded rotisserie chicken and add kraut on top.

Vegan Option

Use plant-based meat crumbles, vegan cheese, and dairy-free sour cream.

Mini Reuben Cups

Fill silicone muffin cups and bake for handheld appetizers.

Spicy Kick

Add hot mustard or red pepper flakes to the dressing or meat layer.

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Frequently Asked Questions (FAQ)

Is this truly keto-friendly?

Yes! With only ~2g net carbs per serving , it fits perfectly within a ketogenic lifestyle.

Can I use regular flour or breadcrumbs?

Not recommended—standard flour and breadcrumbs are high in carbs. Stick with almond flour or pork rinds.

How do I store leftovers?

Store cooled portions in an airtight container in the fridge for up to 4 days . Reheat gently in the oven or air fryer for best results.

What kind of sauerkraut works best?

Look for unpasteurized, probiotic-rich varieties for best flavor and gut health benefits.

Can I freeze this casserole?

Yes! Cool completely, then wrap tightly and freeze. Reheat at 350°F (175°C) for 15–20 minutes .

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Why This Recipe Works So Well

This Easy Keto Reuben Casserole works because of its perfect balance of textures and bold flavors:

• The ground beef gives hearty protein power , keeping you full longer.
• The sauerkraut adds acidity and fiber , balancing the richness without carbs.
• And the Swiss cheese melts into a rich, golden blanket , completing the Reuben experience.

It’s the kind of dish that makes eating clean feel indulgent—because it tastes so good.

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Serving Suggestions

Looking for creative ways to serve your keto Reuben casserole beyond just a plate? Here are some ideas:

In Wraps

Wrap warm slices in large lettuce leaves or collard greens for handheld eats.

Over Greens

Top arugula or kale with warm casserole for a heartier salad.

With Dipping Sauces

Try chipotle mayo, ranch, or horseradish for extra flair.

At a Party

Cut into squares and arrange on a platter with toothpicks for appetizer bites.

As Leftovers

Crumble over mashed cauliflower or mix with eggs for balanced lunches.

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Health Benefits of Key Ingredients

Let’s take a quick look at the health benefits of what makes this dish special:

Corned Beef / Ground Beef

High in iron and B vitamins—supports muscle repair and energy levels.

Sauerkraut

Rich in probiotics and vitamin C—great for digestion and immunity.

Swiss Cheese

Packed with calcium and healthy fats—important for brain function and satiety.

Even though this is a comfort-style dish, it’s packed with nutrients that make it more than just a treat—it’s a smart addition to your balanced lifestyle when enjoyed mindfully.

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Final Thoughts: A Must-Try Comfort Dish for Sandwich Lovers

This Easy Keto Reuben Casserole proves that going low-carb doesn’t mean missing out on bold global flavors. With its soft meat base, tangy kraut finish, and gooey cheese topping, it’s the kind of dish that turns a classic sandwich into something magical.

Whether you’re new to keto, looking for a weekend brunch idea, or want to impress with homemade flair, this Reuben casserole deserves a spot in your kitchen. It’s easy to make, customizable, and loved by kids and adults alike.

So go ahead—whip up a batch, share it with friends, or savor it solo. Either way, you’re treating yourself to something worth celebrating.

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